Παραπομπή σε μορφή APA (7η εκδ.)

Callenbach, E. (1993). Ecomanagement: The Elmwood guide to ecological auditing sustainable business. Berrett-Koehler.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Callenbach, Ernest. Ecomanagement: The Elmwood Guide to Ecological Auditing Sustainable Business. San Francisco: Berrett-Koehler, 1993.

Παραπομπή σε μορφή MLA (9th εκδ.)

Callenbach, Ernest. Ecomanagement: The Elmwood Guide to Ecological Auditing Sustainable Business. Berrett-Koehler, 1993.